公开(公告)号：US07994889B2

公开(公告)日：2011-08-09

申请号：US11755612

申请日：2007-05-30

申请人： Kenji Okabe ,  Kazuhiko Nakamura ,  Toshifumi Kawata ,  Yoshikazu Maruyama

发明人： Kenji Okabe ,  Kazuhiko Nakamura ,  Toshifumi Kawata ,  Yoshikazu Maruyama

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F1/344 ,  H01F3/10 ,  H01F10/20 ,  H01F10/265 ,  H01F27/2804 ,  H01F41/046 ,  Y10T29/4902

摘要： A multilayer inductor having a uniformly improved direct current superposition property and an increased inductance value is disclosed. The multilayer inductor contains a laminate of a plurality of first insulating layers and a plurality of conductive layers, and the conductive layers and through hole conductors are connected to form a helical coil in the laminate. A second insulating layer which has a magnetic permeability lower than those of the first insulating layers is disposed such that it crosses an inner magnetic path of the helical coil, and a margin of the second insulating layer overlaps with the conductive layer in the stacking direction and is in contact with the conductive layer in the overlap portion. The magnetic flux density in the laminate is likely to be highest in the overlap portion, and thus, the highest-density magnetic flux passes through the second insulating layer inevitably, whereby the direct current superposition property can be uniformly improved.

摘要翻译： 公开了具有均匀改善的直流叠加特性和增加的电感值的多层电感器。 多层电感器包含多个第一绝缘层和多个导电层的层压体，并且导电层和通孔导体连接以在层叠体中形成螺旋线圈。 具有比第一绝缘层的导磁率低的导磁率的第二绝缘层设置成使得它穿过螺旋线圈的内部磁路，并且第二绝缘层的边缘在层叠方向上与导电层重叠， 与重叠部分中的导电层接触。 层叠体中的磁通密度在重叠部分中可能是最高的，因此最高密度磁通不可避免地通过第二绝缘层，由此可以均匀地提高直流叠加性。

公开(公告)号：US20080012679A1

公开(公告)日：2008-01-17

申请号：US11755612

申请日：2007-05-30

申请人： Kenji Okabe ,  Kazuhiko Nakamura ,  Toshifumi Kawata ,  Yoshikazu Maruyamai

发明人： Kenji Okabe ,  Kazuhiko Nakamura ,  Toshifumi Kawata ,  Yoshikazu Maruyamai

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F1/344 ,  H01F3/10 ,  H01F10/20 ,  H01F10/265 ,  H01F27/2804 ,  H01F41/046 ,  Y10T29/4902

摘要： A multilayer inductor having a uniformly improved direct current superposition property and an increased inductance value is disclosed. The multilayer inductor contains a laminate of a plurality of first insulating layers and a plurality of conductive layers, and the conductive layers and through hole conductors are connected to form a helical coil in the laminate. A second insulating layer which has a magnetic permeability lower than those of the first insulating layers is disposed such that it crosses an inner magnetic path of the helical coil, and a margin of the second insulating layer overlaps with the conductive layer in the stacking direction and is in contact with the conductive layer in the overlap portion. The magnetic flux density in the laminate is likely to be highest in the overlap portion, and thus, the highest-density magnetic flux passes through the second insulating layer inevitably, whereby the direct current superposition property can be uniformly improved.

摘要翻译： 公开了具有均匀改善的直流叠加特性和增加的电感值的多层电感器。 多层电感器包含多个第一绝缘层和多个导电层的层压体，并且导电层和通孔导体连接以在层叠体中形成螺旋线圈。 具有比第一绝缘层的导磁率低的导磁率的第二绝缘层设置成使得它穿过螺旋线圈的内部磁路，并且第二绝缘层的边缘在层叠方向上与导电层重叠， 与重叠部分中的导电层接触。 层叠体中的磁通密度在重叠部分中可能是最高的，因此最高密度磁通不可避免地通过第二绝缘层，由此可以均匀地提高直流叠加性。

公开(公告)号：US06238779B1

公开(公告)日：2001-05-29

申请号：US09422496

申请日：1999-10-21

申请人： Hidemi Iwao ,  Toshifumi Kawata

发明人： Hidemi Iwao ,  Toshifumi Kawata

IPC分类号： B32B300

CPC分类号： H01F27/2804 ,  B32B18/00 ,  C04B2237/32 ,  C04B2237/68 ,  Y10T428/24926

摘要： A multilayer type electronic part includes a laminated structure formed by stacking a plurality of first and second ceramic layers, the first ceramic layers being provided with internal electrode patterns on top thereof, the second ceramic layers having no internal electrode pattern and being located at a top and a bottom portions of the laminated structure, respectively, the internal electrode patterns being connected to each other to form a coil inside the laminated structure, a pair of external electrodes provided at two opposing sides of the laminated structure and connected to the coil. The multilayer type electronic part further includes one or more third ceramic layers, each of the third ceramic layers not including internal electrode pattern and being interposed between the first ceramic layers, and means for connecting the internal electrode patterns formed on the first ceramic layers to form the coil.

摘要翻译： 多层型电子部件包括通过堆叠多个第一和第二陶瓷层而形成的层叠结构，第一陶瓷层在其顶部设置有内部电极图案，第二陶瓷层没有内部电极图案并且位于顶部 和层叠结构的底部，内部电极图案彼此连接以在层压结构内部形成线圈，设置在层叠结构的两个相对侧并连接到线圈的一对外部电极。 多层型电子部件还包括一个或多个第三陶瓷层，每个第三陶瓷层不包括内部电极图案并且介于第一陶瓷层之间，以及用于连接形成在第一陶瓷层上的内部电极图案的装置，以形成 线圈。